Paper-making machinery.



T. BAUER.

PAPER MAKING MACHINERY.

APPLICATION FILED Nov. 25, 1910.

Patented Aug. 26, 1913.

T. BAUER.

PAPER MAKING MACHINERY.

APPLIOATION FILED Nov. 25, 1910.

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. tion, similar to Fig. 2, showing a modified lTo all 'whom it mayconcern.'

'view, in front elevation, of the journal sup- THOMAS BAUER, OF LA.FAYETTE, INDIANA;

PAPER-MAKING MACHINERY.

Specication of Letters Patent.

Patented Aug. 26,1913.

Application led November 25, 1910. Seria! No. 594,019.

Be it known that I, THOMAS BAUER, a citizen of the United States,residing at La Fayette, count of Tippecanoe, State of Indiana, have ma ea. certain new and useful Invention in Paper-Making Machinery, of whichthe following is a specification.

This invention relates to improvements in paper making machinery andparticularly to the suction box employed in connection with machinery ofthis class.

The object ofthe invention is to rovide means for relieving thetraveling lt or carrier for the pulp of undue and unnecessary wear andfriction while subjected to the act-ion of the suction'.

Other objects ofthe invention will appear more fully hereinafter. Theinvention consists substantially in the construction, combination,location and relative arrangement of parts, all as will be more fullyhereinafter set forth, as shown in the accompanying drawings, andfinally pointed out in the appended claim.

Referring to the accompanying drawing and to the various views andreference signs appearing thereon, Figure 1 is a `broken view in topplan of a suction box embodying the principles of my invention, the pulpcarrying belt being removed. Fig. 2 is a view in vertical cross sectionof the same on the line 2, 2, Fig. 1, looking in the direction of thearrows, the pulp carrier being shown in operative relation with respectto the suction box. Fig. 3 is a broken view in vertical longitudinalsection on the line 3, 3, Fig. l, looking in the direction of thearrows. Fig. 4 is a broken, detached, detail view in longitudinalsection of one end of the suction drum or roll. Fig. 5 is a detacheddetail port for one end of the suction `roll or drum. Fig. 6 is asectional view of the same on the line 6, Fig. 5, looking in thdirection of the arrows. Fig. 7 is a broken view in secform of pulpcarrying belt embodying the principles of my invention.

In the operatlon-of making paper pulp, the wet pulp is usually appliedto a felt or other form of porous belt or endless carrier and while thecarrier is moved along it is passed over a suction box constructed topermit the water in the pulp to be drawn therefrom by suction action.-The suction action to which the carrier is subjected imposes cessivefriction and wear.

great friction on the carrier causing the same to work hard', and towear out rapidly.

It is among the speciall urposes of my present invention toprovi e asuction box structure which relieves the pulp carrier of excessivefriction and wear lwhile passing thereover.

In carrying out my invention I propose to Aemploy a perforated suctiondrum or roll,

journal the same within the suction box so as to be capable of freerotation, the periphery of said roll extending slightly through theopening in the suction box and into position to receive the bearingcontact of the traveling pulp carrier as 1t passes thereover wherebythe' carrier, while bei-ng subjected to the suction action appliedthrough the perforations in the roll or drum is passing over the rollingsurface of the drum or roll, that is the roll or drum revolves as thecarrier is drawn thereover, thereby greatly relieving the carrier oflex- I also propose, 1n some instances to employ a traveling carrierhaving a. Wire gauze or similar fabric applied to the under or Wearingsurface thereof, or incorporated therein, and which, contacting with thesurface of the suction box or roll or drum takes the wear and frictionfrom t-he felt or other porous pulp carrier.

In the drawings 10, designatesthe suction box. This is a chamber whichis closed except for a longitudinal opening 11, in its upper surface,and an opening 12 for suitable connection with an exhaust pump. The areaof the opening l1 in the upper surface of the suction box may be limitedand restricted by the wearing plate 13, applied to the fiat surfaces ofthe bounding edges of the longitudinal opening 11 in the suction box,said wearing plate having a longitudinal opening 14 therethrough ofsuitably restricted area and through which the suction action is appliedto the carrier. The wearing plate 13, presents a flat outer surface overwhich the ulp carrier operates. In this manner only t at portion of thecarrier which registers with the opening 14 in the wearing plate, andthrough said opening, and openingrll, in the suction bo, with theinterior cfid box, is subjected to the suction actio A hollow roll ordrum 15, is suitably journaled within the suction box, and in suchrelation as that its peripheral surface protrudes slightly through theopenio'o ing 14, in wearing late 13, so as to ltaire the bearing Contacto the pulp carrier when passing thereover. The shell of the drum or roll15 is perforated as indicated at 16..v It will be understood that thesuction box is closed exccptfor the openings for the exhaust pumpconnection and that through which the perforated periphery of the rollor drum 15 protrudes. Consequently as the pulp carrier is progressedover-the exposed surface. of the perforated drum or roll 15, it issubjected to the suction faction of the exhaust pump. This action wouldimpose an excessive friction upon the carrier by drawf ing the same downtight-against the exposed surface of the drum or roll 15, therebysubjecting the same to undue Wear and strain. To obviate this, at leastto a very large extent, I mount the roll or drum 15, to freely rotate sothat it revolves as the carrier is drawn along thereover, and hence,instead of the carrier being drawn over a fixed surface while under thesuction action, it moves over a moving surface, that is, the surface ofthe roll orA drum With which it contacts rolls or moves along With thecarrier. The carrier is indicated at 17, and, as above in` dicated, itis of felt or other convenient porous material.

A convenient arrangement of mounting for the perforated suction roll ordrum, to permit of the free rotation thereof, Within the suction box, isshown wherein each open end of the shell of the drum receives a spidersupportinfr frame 18, carrying a short stub shaft 19, having one endthereof extending into a journal bearing 20, therefor, said bearingbeing carried -in a support 21, mounted in the suction box. Means areprovided for adjusting the journal supports 21, so that the extent toWhich'the roll or drum 15, protrudes through' the openings 11, 14, maybe regulated. An'adjusting set screw 2Q, is shown for Athis purpose, thejournal www would otherwise be'imposed on the pulp carrier. The bearing20, may if desired be a roller bearing.

Having now set forth the object and nature of my invent-ion, and aconstruction embodying the principles thereof, what l claim as new anduseful and of my own invention, and desire to secure by Letters Patentis,-

In a paper making machine, a suction box having a longitudinal openingtherein, a perforated roll or drum arranged inside said box for theperipheral surface to protrude through the longitudinal opening in saidbox, the bounding edges of the openino' in said box being flat to form abearino surface, an imperforate rectangular plate aving a centrallongitudinal opening therethrough and adapted to be applied to saidbearing surface, the central longitudinal opening in said plate servingto limit the suction area of the opening in the box, whereby all thesuction action takes place through the perforations in the roll, saidroll or drum being journaled to freely rotate, a pulp carrier operatingover the exposed surface of the roll or drum, and a Wire gauze ornetting applied to the carrier to take the Wear thereof.

In testimony whereof I have hereunto se my hand in the presence of thesubscribing Witnesses, on this 26th .day of October A. D.,

THOS. BAUER. Witnesses:

FRANK O. CUPPY, WILLIAM G. GUDE.

